<template>
  <view class="goods-list">
    <view v-for="(item, i) in goodsList" :key="i" @click="gotoDetail(item)">
      <!-- 为 my-goods 组件动态绑定 goods 属性的值 -->
      <my-goods :goods="item"></my-goods>
    </view>
  </view>
</template>

<script>
	export default {
		data() {
			return {
				//请求参数对象
				queryObj:{
					query:'',
					cid:'',
					pagenum:1,
					pagesize:10
				},
				goodsList:[],
				total:0,
				isloading:false
			};
		},
		methods: {
		  // 获取商品列表数据的方法
		  async getGoodsList(cb) {
		    // 发起请求
			this.isloading=true
		    const { data: res } = await uni.$http.get('https://api-hmugo-web.itheima.net/api/public/v1/goods/search', this.queryObj)
		    if (res.meta.status !== 200) return uni.$showMsg()
		    // 为数据赋值：通过展开运算符的形式，进行新旧数据的拼接
			this.isloading = false
			cb&&cb()
		    this.goodsList = [...this.goodsList, ...res.message.goods]
		    this.total = res.message.total
		  },
		  // 点击跳转到商品详情页面
		  gotoDetail(item) {
		    uni.navigateTo({
		      url: '/subpkg/goods_detail/goods_detail?goods_id=' + item.goods_id
		    })
		  }
		},
		onLoad(options) {
			this.queryObj.query=options.query||''
			this.queryObj.cid=options.cid||''
			this.getGoodsList()
		},
		// 触底的事件
		onReachBottom() {
			 // 判断是否还有下一页数据
			  if (this.queryObj.pagenum * this.queryObj.pagesize >= this.total) return uni.$showMsg('数据加载完毕！')
			// 判断是否正在请求其它数据，如果是，则不发起额外的请求
			if (this.isloading) return
			this.queryObj.pagenum += 1
			this.getGoodsList()
		},
		onPullDownRefresh() {
			this.queryObj.pagenum = 1
			this.total = 0
			this.isloading = false
			this.goodsList = []
			this.getGoodsList(()=>{uni.stopPullDownRefresh()})
		}
	}
</script>

<style lang="scss">
	
</style>
